A Modeling Method for Abrupt Change Shafts in Gearboxes and Experiment Verification

[摘要] The modeling method of the shaft with abrupt change of section is essential in gearbox design. This study reviewed the proposed piece-wise beam model for abrupt change shaft, which is dedicated to estimate shaft deflection. The proposed model is an equivalent model, which is established by comparing and analysing the distribution of the flexural rigidity of the shaft model using solid element. Based on the proposed model a design tool is developed for creating the piece-wise beam model with high efficiency and convenience. As verification of the piece-wise beam model, a test bench with abrupt change shaft is designed and constructed. The shaft deflection with static load has been measured. Experiment analysis has been made by comparing the results between experiments and simulation, which is obtained using solid model, the traditional beam model and the proposed piece-wise beam model. Result shows that the piece-wise beam model is more accurate than the traditional beam model in shaft deflection estimation. The experiment result reveals the correctness and effectiveness of the piece-wise beam model and the design tool.

[发布机构] ABB Corporate Research Center, Kangxin highway 4528, Pudong, Shanghai, China^1

[效力级别] 原子能学

[关键词] Equivalent model;Experiment analysis;Experiment verification;Flexural rigidities;Gearbox design;High-efficiency;Shaft deflections;Solid elements